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Simplex Trading

Simplex Trading Portfolio holdings

AUM $149B
1-Year Est. Return 62.07%
 

Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.

This Fund
S&P 500
This Quarter Est. Return
+33.36%
1 Year Est. Return
+62.07%
3 Year Est. Return
+116.86%
5 Year Est. Return
+116.02%
10 Year Est. Return
+774.44%
AUM
$62.7B
AUM Growth
+$5.97B
Cap. Flow
-$480M
Cap. Flow %
-0.77%
Top 10 Hldgs %
44.28%
Holding
8,917
New
1,290
Increased
3,427
Reduced
2,723
Closed
1,278

Top Buys

Rank Stock Value
1
QQQ icon
Invesco QQQ Trust
QQQ
+$77.3M
2
GLD icon
SPDR Gold Trust
GLD
+$73.2M
3
EFA icon
iShares MSCI EAFE ETF
EFA
+$38.5M
4
NFLX icon
Netflix
NFLX
+$38.4M
5
NVDA icon
NVIDIA
NVDA
+$36.3M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$55.9M
2
VXX icon
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
+$28.3M
3
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$23.1M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$23.1M
5
ADBE icon
Adobe
ADBE
+$22M

Sector Composition

Rank Sector Weight
1 Technology 0.49%
2 Consumer Discretionary 0.47%
3 Communication Services 0.34%
4 Healthcare 0.26%
5 Financials 0.23%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
IHF icon
7926
iShares US Healthcare Providers ETF
IHF
$1.18B
– –
-7,835
Closed -$261K
IHRT icon
7927
iHeartMedia
IHRT
$552M
– –
-191
Closed -$1.49K
IHY icon
7928
VanEck International High Yield Bond ETF
IHY
$42.9M
– –
-100
Closed -$2K
IIIV icon
7929
i3 Verticals
IIIV
$387M
– –
-6,651
Closed -$169K
IIIV icon
7930
PUT
i3 Verticals
IIIV
$387M
– –
-102
Closed -$194K
IMAX icon
7931
CALL
IMAX
IMAX
$2.42B
– –
-177
Closed -$160K
IMAX icon
7932
IMAX
IMAX
$2.42B
$0 ﹤0.01%
749
-13,307
-95% -$156K
IMAX icon
7933
PUT
IMAX
IMAX
$2.42B
– –
-1,187
Closed -$1.07M
IMKTA icon
7934
Ingles Markets
IMKTA
$1.61B
– –
-1,090
Closed -$44.2K
INDA icon
7935
iShares MSCI India ETF
INDA
$6.65B
$0 ﹤0.01%
67,033
+10,842
+19% +$290K
INDB icon
7936
PUT
Independent Bank
INDB
$4.04B
– –
-1
Closed -$6K
INDP icon
7937
Indaptus Therapeutics
INDP
$369M
$0 ﹤0.01%
1
– –
INDY icon
7938
iShares S&P India Nifty 50 Index Fund
INDY
$540M
– –
-1,719
Closed -$44K
ING icon
7939
ING
ING
$92.7B
– –
-198,908
Closed -$1.21M
INN
7940
Summit Hotel Properties
INN
$749M
– –
-73
Closed -$412
INSG icon
7941
Inseego
INSG
$115M
– –
-5,422
Closed -$573K
INVA icon
7942
Innoviva
INVA
$1.56B
– –
-17,313
Closed -$235K
INVH icon
7943
Invitation Homes
INVH
$17.5B
– –
-32,961
Closed -$826K
IOSP icon
7944
CALL
Innospec
IOSP
$2.07B
– –
-39
Closed -$16K
IOVA icon
7945
Iovance Biotherapeutics
IOVA
$2.29B
– –
-24,875
Closed -$818K
IPI icon
7946
Intrepid Potash
IPI
$463M
– –
-667
Closed -$6.93K
IPO icon
7947
PUT
Renaissance IPO ETF
IPO
$159M
– –
-3
Closed -$7K
ITB icon
7948
iShares US Home Construction ETF
ITB
$2.35B
– –
-28,612
Closed -$827K
ITGR icon
7949
PUT
Integer Holdings
ITGR
$3.31B
– –
-16
Closed -$100K
ITT icon
7950
CALL
ITT
ITT
$17.5B
– –
-206
Closed -$934K
316 317
318
319 320

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Simplex Trading's Q2 2020 Portfolio in Review

As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.

Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.

By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.

  • Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
  • Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
  • Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
  • Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
  • Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
  • Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
  • Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.

Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.